Ignition timer for internal-combustion engines



Sept. 25, 1923. 1,468,885

V.SHEARER IGNITION TIMER FOR INTERNAL COMBUSTION ENGINES Filed April 4, 1921 Patented Sept. 25, 1923.

UNITED STATES 1 PATENT OFFICE.

VANCE snnlmnnor NEW Yemen. Y., assicnon'ro 'BLUBLAZE MOTOR SPECIALTIES" CORR, OF NEW YORK, N. Y., A CORPORATION 01 NEW YORK.

IGNITION TIMER FOR INTERNAL-COMBUSTION ENGINES.

Application filed April 4, 1921. Serial No. 453,459.

To all whom it nmy'conoem:

Be it known that I, VANCE Smmnnma citizen of the United States, and resident of the borou h of Manhattan, in the city,

county, and State of New York, have incarrier. and one object is to provide abrush that will have a smooth and even bearing upon the fixed contacts during the revolution of the timer shaft; another object is to prevent oil reaching the brushor its raceway and the fixed contacts. and further to provide a secure holder for the brush, and to facilitate the placing of the timer in 'position for use, without injury to the brush, which with brushes of the ordinary charactor heretofore in use is sometimes difficult owing to the position occupied by the timer, particularly on the Ford cars.

In the accompanying drawing:

Figure 1. is an inner end view of a timer embodying my invention, the shaft being in section.

Fig. 2. is a vertical section on the broken line 2-2 of Fig. 1. I

Fig. is a face view of the brush and its carrier, detached, and

Fig. 4. is an enlarged sectional view taken on the broken line 44 of Fig. 3.

Similar reference characters denote like parts throughout the several views.

The body 10 of the timer, is substantially hollow, and externally of a shape similar to the present standard Ford timer, and is provided with the usual lug 11, having an opening 12, to receive the connection for adj ust ment to advance or retard the spark. This bodymembcr is preferably of hard fiber or like insulating material, and is molded or pressed to shape, being at one side interiorly rabbeted forming an annular raceway 13, into which are seated quadrantally spaced fixed contact: blocks 14. 15, 16 and 17, which are preferably pressed into place at the time of molding the body member, the outer surface of such contact blocks being flush with the surface of the raceway 13. Two metallic blocks 18and 19, are also set into the race-.

way 13, but not extending to the surface thereof.

Spaced binding posts 20 and, 21. are mounted on the top of the body member 10, and their terminals 22 and 23, pass through openings in said body and. come intocontact with the two fixednpper contact blocks 14' and 15. i

The binding posts 24 and for connection withv the two lower contactslfi and 17,

are also mounted upon the top of the body 10, between the binding posts QOand 2...

Conductorwircs or strips 26 and 27 pass from the lower contact blocl rs 16*and 17, to the contact'bloclzs .18 and19, into contact with which the terminals 28 and 29, of the binding posts 241 and 25, are brought. these terminals passing through openings in the body 10. The strips or wires 26 and 27, are preferably pressed into place at the time of molding the body member, and extend past the upper contact blocks 1-42; and 15, but in sulated therefrom.

30, indicates the timer shaft, one end of which extends into the hollow body 10.

The carrier for the brush or movable con tact 31, comprises-m circular disk or plate 32, fixed to or integral with a hub 33, keyed or otherwise fixed to the shaft 30. within the hollow body 1.0. The edge of the dist: 32, is bent over at right angles forming an annular flange This disk and its flange prevents oil reaching the brush or its rac eway and the fixed contacts. A portion of the disk is thickened within the flange. such thickened portion 37 pre from the hub 33, transversely to a point closely adjacent the flange 34-. A. recess 3-6 is formed in the disk 32. adjacent the outer end of such. thickened portion, into which fits a. collar 37, surrounding the brush or movable contact 31. This collar is provided with a right angle annular flange 38, which rests upon the faceof the disk when the collar is forced down into said recess.

This collar is also provided. with an in ternal annular shoulder 39, against whichv the annular flange 4.0, on the bottom of the brush 31, contacts, the brush being insertedv into the collar from the under side tlienreof,

and projecting outwardly therefrom, but positively retained in position by said flange and shoulder.

A spiral spring ll, within said collar,

'erably extending a brush projecting through said opening PL'UYlLlCtl with an annular flange on i's may end [ill-Kill ilgillllSt 51ml slmuiwlcr, and :1

h 1% spring wifilnn 52nd sleoxe bearing ugun the 5 nut lzi. nun be on; 5 [hanged end ()f the brush. 30

' oi .lns war 12. 11 an ignition timer, the combination 0! :1 body having an interim annular racom W11 spaced ai'OEllZEC'tS vml'aediloil tlLl'illl. tln' Talia-vs; :Ljjzli. rotary shaft extending into the body. it c 10 :2. m mtmy (ulm' metallic plain having 11 lmi) lirwl "in-cl i'vizzi ml in lnx'ft. its outer edge buing bent at nigh; i 01117110, Slile and. lmvinn a 11 00 all said c-zlge. :1 S QGYU llI tQil within snvh.

invin an uni'nilin' finnn'v on one Ullkl 1 ion the face of said plate and 1m 40 itml opening: of legs: diannr it ll'Oii) forming an interim ansh mi der, lJlUFi'l projecting tilil'ouggli and having an annular fizlnqv i(l shoulder l): which thu 46 intninwl Within Yl1-1Sl(0 f( and :-:1'in5:; upon 1w flanged eml of ill wish. 7

5mm; by me this lF-t (lav of April. 5919!.

VANOE sm l man.

x lul'i'lllil'il' an :u' examine?" 

